A nice little video illustrating the removal of the the bridge at KGX over the Christmas shutdown, and associated works including removal and re-installation of OHL wires, all in time for December 27th! 
http://www.networkrailmediacentre.co.uk/imagelibrary/detail.asp?MediaDetailsID=1926

http://www.networkrailmediacentre.co.uk/imagelibrary/detail.asp?MediaDetailsID=1926